Stud bolt, A193 Material: 35CrMo,B7, B8, B8M, B8T, B 16 Heavy hex nut, A194 Material: 2H, 2HM, Finish: black Stud bolt, A193Material: 35CrMo,B7, B8, B8M, B8T, B 16Heavy hex nut, A194Material: 2H, 2HM, Finish: black sets of high-strength bolts with large hexagon hea for steel structure